You will need a water pump housing from a 1986-1988 Mazda Rx7 in order to use our 12A 7" supercharger kit.

These were never available from Mazda as a separate unit from the water pump, thermostat and thermostat housing, so we are manufacturing them.

Even the complete unit is no longer available from Mazda, so you need to find a used water pump housing, or use ours.